Razor blade sharpener



Feb. 8,A 1949. 1. T. KING RAZOR BLADE SHARPENER Filed May 2, 1947 r 1 sa. 25. w 1 0 L1 1 11..; 1 l 4. 1+.. 1| l. .0 .m 1- 1 1 1 1 l 1 1 1 1 1 C a0 a e h6 .l

3 woe/wim?, J'afm. es King,

Patented Feb. 8, 1 949 UNITED 2,461,161. l Y

.RAZOR BLADE SHARFENER James T. King. Burbank. Calif.

Application May 2,v 1947, Serial No. '745,401

(CL 51e-*8.0

4 Claims. 1

My invention relates todevices for-useI in sharpening razor blades of the` double-.edge Wafer or Gillette type.

The objects of the present invention are:-

1. To provide a simple inexpensive device Aso* designed thatl its parts can be made of accurate plastic die cast parts.

2. To provide a Sharpener of such construction that the correctl angle of the two edged Vblades is sharpened yfor either the hollow ground or Wedge shaped blade edges.

3."Io provide a Sharpener having two rollers, one oi which is turned on a fixed axis by a handle while the other is in full floating contact'wlthrthe.

driving roller and is driven thereby; thefloating roller being held in contact by means of aspring Wire hooked to the base of the case.. and engaging` the ends of the floating roller to constitute an axle for the roller.

4. To provide a blade holderor loading; device which is fully spring-loaded so that when the blade is pressed down for sharpening on the leatherV spirals, the correct angle is automatically brought about to properly hone the blade edges.

5. In general to provide an eicient razor blade Sharpener that can be manufacturedl at low expense as compared to those shaqipenersf now oni the market.

To the attainment of the aforesaid objects and ends, invention resides in the novel details of construction, combinations and arrangementsxof parts Which will hereinafter be first described and then be particularly pointed out in the ap-A pended claims, reference being had to the accompanying drawing in which:

Fig. 1 is a top plan view of my invention with a blade inv place.

Y Fig. 2 is a longitudinal. section onv the line 2%-2 of Fig. l..

Fig. 3 is a cross section on the line 3-3 of Fig. 2.

Fig. 4 is a top plan View of the case, the roller holding spring and the blade holder loading springs in place.

Fig. 5 is a detail section on the line 5--5 of Fig. 4.

Fig. 6 is a section looking from right to left in Fig. 5.

Fig. 7 is a side elevation of the device, some internal parts being shown in dotted lines.

Fig. 8 is a detail elevation of the blade holder.

In the drawing in which like numerals of reference indicate like parts in all the figures, I represents the case whose wall is reinforced or thickened, as at 2, the portions 2 lying equidstant from the mid-transverse plane of the case. One

lil

of the reinforcements 2 is bored through as` at 3 andtof receie the bearingpartsof a lcrank shaft 6;. shaftisI of twodiameters, the largest@ being threadedemd the lesser *6l* being nenethreadedi-:seerig li). Theshait bis prof-` videdtwithaaorank armi-@f and: hand enga-geableroller 5&1 asV shown.

`Each sharpening roller-.111s of thesamediarne.-

ter has a spiralugroove ile in which isV tightly fitted andi .an leather strop 8.

The lstampsr '8; `and the intervening; spaces are, preferably, of `the same- Wi-'fltli showna VEach roller- ..lha-s" a 'hub lel horariasV at l, one .roller being counterborednand tizlreaded as at 1d vto receivefthecranii shaftf. roller 'I' also-.has a rim'fl in which. the:grooveil.a isxrnold-ed orcut.

The side walls of.' the-#case are; providedwith vertical grooves 9 and inclined projectionsziil tofr receive the spring' Wirel roller' oat'er.. vwhich iloater includes a transverse portion -I-'Z" that fits under' a Aheck Hl 'formed-on the bottom of the caseA at V'the middle; The `fio'ater also has arms 'I3l whichlieionthe bottom of the case i and eis-tendr from 'the midetransvcrseplane or thek case to a point directly. under-the axisof the-roller; The

arms lmerge with upwardly extended armpor-fl tions i 4/ hav-ing short ends i 5i bent one towardI the other to vcor-ist'itutetrunnions' I-6 which fit intoI the ends oi theV bores oft'liel floating-.roller and continuously ytend to maintain it in contactwith the driving roller that lis located on the crank Shaft 5'. the bottom ofthe' caseteprovidespacestoreceive thel VarmsY F32 Frther, eachprojecti m -I`10lhasva rounded corner 'We anda-1r inclined si-de Ifllbde"` signed'tol irez-miti the vertical arm-ends Ill-y ter have mov-ement in grooves 'Q'ftow'ard the drivin-g roller tov maintain 'pressure contact betweenfthe two rollers l' softhat theorie willdrlve theot'her.

case; midway i'tsfend-s, has two side pockets l1 to contain colsprings I8, the pockets being recessed atthetop a predetermined `depth as at IB to receive the cross-bar 20 of the blade holder and guide. y

The bar 2li has lugs ZI to t into lthe coil springs I8 and it has a tapered rib 22 toproject down between the rollers 1 (see Figs. 2 and 3). It also has a top rib 23 and lugs 24 to fit lthe slot and holes of a wafer blade B to be sharpened. .The blade B may be manually held down on the bar 20 but I prefer to provide a leaf spring clip 2 5 for the purpose. This clip is secured at one end to the fbar, as aty 26, and is slotted as at 21 to iitA over the rib 23 andnlugs 2t and press the blade B down on the bar.

The proj ection'siilf terminate' short of Operation After placing the blade B on the holder, the user of the appliance holding the case in one hand, places the bar 29 in the recesses i9 and with his thumb presses the holder down until the blades edges b engage the leather strops 8. He then turns crank -B to turn the rollers to strop the blade edges. The depth of the recesses I9 determines the maximum bend thatfcan be given the blade to present a'predetermined xed angle of contact with the rollers. of the :blade edges the blade is removed, turned over and replaced on the holder andthe aforesaid process is repeated. K

From the foregoing description taken in con` nection with the accompanying drawing it is thought the construction, operation and advan- To strop the other faceA ment which comprises a resilien-tly mounted axial support for the other of said rollers, which support has provision for exerting a contacting force of one roller against the other whereby the roller on the crank shaft will drive the other roller, said resiliently mounted support comprising a springwire member having a cross-bar portion, two parallel legs extending along the bottom of the case, said legs having upward extensions with ends bent vover toward one another as trunnions for said other of said rollers, and means to anchor to said case, said anchoring means comprising a hook on the bottom of the case for holding -said cross-bar portion, and side wall projections of the tages of the invention will be clear to those skilled in the art.

What I claim is:

1. In a wafer blade sharpening machine, a case; a crank shaft journalled in suitable bearings in said case; a sharpening roller lon s aid crank shaft; a iloating sharpening roller in said case; spring means holding said iioating roller in contact with said rst mentioned roller, said means comprising a hook on the bottom of the case, a roller oater having a transverse portion located under the hook and having arms lying against the bottom of the case, said arms having upward extensions terminating in ends bent over toward one another and forming trunnions for said oating roller, and projections on walls of the case for holding said fioater against pivoting on said hook; and means movably engaging said case for presenting a blade to said rollers to be sharpened thereby.

2. In a razor -blade sharpening machine Wherein is provided an open top case, two stropping rollerslocated in said case, a flxedly located crank shaft carrying one of said rollers and mounted in bearings in said case, the improvement which comprises a resiliently mounted axial support for the other of said rollers, which support has pro- Vision for exerting a contacting force of one roller against vthe other wherebythe roller on the crank shaft willfdrive the other roller,said resiliently mounted-support comprising a spring-wire member having a cross-bar portion, two parallel legs extending along the bottom of the case, said legs having upward extensions with ends bent over toward one another as -trunnions for said other of said rollers, and means to anchor said cross-bar portion and said two parallel legs to said case.

3. In a razor blade sharpening machine wherein is -provided an open top case, two strapping rollers located in said case, a xedly located crank shaft carrying one of said rollers and mounted in bearings in 4said case, the improve- 4. In a razor blade sharpening machine whereinis provided an open top case, two stropping rollers located in said case, a xedly located crank shaft carrying one of said rollers and mounted in lbearings in said case, the improvement which comprises a resiliently mounted axial support for the other of said rollers, which support has provision of exerting a contacting force of one roller against the other whereby the roller on the crank shaft will drive the other roller, said resiliently mounted support comprising a spring-Wire member having a transverse bar portion,'a pair of horizontal side legs, having upwardly extended leg portions terminating in trunnion members extending toward one another and parallel to said bar portion, a member on the bottom of the case to engage and hold said transverse bar portion, members on the sides 0f the case to engage said horizon-tal side legs and hold them down, said case having vertical grooves to receive said upwardly extended leg portions and permit said runnion members to move said other of said rollers toward'the roller that is carried by the crank shaft.

JAMES T. KING.

REFERENCES CITED The following references are of record in the iile of this patent:

- yUNITED STATES PATENTS Number 

